Hardware Spec Index

Caldera FN-5891 Pro 140mm PWM Case Fan

Case Fans · Caldera · SKU FN5891-PRO · Released 2025 · Updated 2026-10-25

Key facts

Benchmark index578 (Case Fans scale)
Category rank#26,998
Street price$19
Power3 W
Performance per dollar30.42
Released2025

Specifications

BrandCaldera
ModelCaldera FN-5891 Pro
Size140 × 140 × 25 mm
Speed400–1,500 RPM (PWM)
Airflow72.0 CFM
Static pressure1.43 mmH₂O
Noise22 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-5891 Pro 140mm PWM Case Fan”, https://vextor7.com/item/71663305 (accessed 2026-10-25).